:root {
  color-scheme: light;
  --text: #222;
  --muted: #666;
  --link: #075c9c;
  --border: #d7d7d7;
  --background: #fff;
  --code-background: #f4f4f4;
}

* { box-sizing: border-box; }

html { background: var(--background); scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font: 16px/1.55 Arial, Helvetica, sans-serif;
}

a { color: var(--link); }
a:hover { text-decoration-thickness: 2px; }

.manual-layout {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 64px;
  display: grid;
  grid-template-columns: 250px minmax(0, 820px);
  gap: 30px;
}

aside {
  align-self: start;
  position: sticky;
  top: 18px;
  max-height: calc(100vh - 36px);
  overflow-y: auto;
  padding: 15px 17px;
  border: 1px solid var(--border);
  background: var(--code-background);
  font-size: .85rem;
}

.manual-label { margin: 0 0 12px; font-weight: bold; }
summary { cursor: pointer; font-weight: bold; }
aside nav > ul { margin: 12px 0 0; padding-left: 0; list-style: none; }
aside nav ul { padding-left: 18px; }
aside nav li { margin: 4px 0; }
aside nav a { text-decoration: none; }
aside nav a:hover { text-decoration: underline; }
.source-note { margin: 18px 0 0; padding-top: 14px; border-top: 1px solid var(--border); color: var(--muted); }

.manual-content { min-width: 0; }
.title-block { padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.title-block h1 { margin: 0 0 6px; font-size: 2rem; line-height: 1.25; }
.subtitle { margin: 0 0 12px; color: var(--muted); font-size: 1.05rem; }
.authors { margin: 0; color: var(--muted); font-size: .9rem; }

h1, h2, h3, h4 { line-height: 1.25; scroll-margin-top: 24px; }
.manual-content > h1 { margin: 42px 0 14px; font-size: 1.65rem; }
.manual-content > h2 { margin: 34px 0 12px; font-size: 1.3rem; }
.manual-content > h3 { margin: 28px 0 10px; font-size: 1.08rem; }
.manual-content > h4 { margin: 24px 0 8px; font-size: 1rem; }

p, li { max-width: 75ch; }
blockquote { margin: 20px 0; padding-left: 16px; border-left: 3px solid var(--border); color: var(--muted); }
pre { max-width: 100%; overflow-x: auto; margin: 18px 0; padding: 15px 17px; border: 1px solid var(--border); background: var(--code-background); line-height: 1.5; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .92em; }
:not(pre) > code { padding: .08em .25em; background: var(--code-background); }
img { display: block; max-width: 100%; height: auto; margin: 20px auto; border: 1px solid var(--border); }
table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; }
th, td { padding: 8px 10px; border: 1px solid var(--border); text-align: left; vertical-align: top; }
dt { margin-top: 18px; font-weight: bold; }
.math { overflow-wrap: anywhere; }
.references { font-size: .9rem; }
.csl-entry { margin: 0 0 12px 22px; text-indent: -22px; }

@media (max-width: 800px) {
  .manual-layout { grid-template-columns: 1fr; padding-top: 28px; }
  aside { position: static; max-height: none; }
}

@media (max-width: 520px) {
  .manual-layout { padding-top: 24px; }
  .title-block h1 { font-size: 1.65rem; }
}

@media print {
  .utool-site-header, aside { display: none; }
  .manual-layout { display: block; width: auto; padding: 0; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }